Mr. Signor primarily focuses his practice on serving European clients in all aspects of U.S. intellectual property law. He has a wealth of experience in drafting and prosecuting patents in diverse technologies. In addition to his strong patent prosecution practice, he works closely supporting clients in making informed business decisions and in enforcing and commercializing their IP. This has involved drafting numerous opinions on patent validity, patentability and the freedom to operate, in addition to drafting petitions for reexamination and Inter Partes Review, assisting in patent infringement litigation, counseling with respect to litigation-related matters, performing due diligence and negotiating and drafting license and joint development agreements.
Mr. Signor is a frequent speaker to European audiences on a broad range of U.S. law topics. Through his long-time role as vice-chair of the European Practice Committee of the Intellectual Property Owners Association (IPO) and location in the firm’s Frankfurt office, Mr. Signor has had the opportunity to collaborate on numerous projects, patent seminars and conferences with European patent practitioners and the European Patent Office (EPO).
Experience
Mr. Signor’s practice has a particular emphasis in the mechanical, electrical and computer fields. In the mechanical field, areas of expertise include manufacturing, rapid prototyping, robotics, product finishing, chemical plant designs, infrared technologies, optics, consumer products, appliances, measurement devices, automotive and aircrafts. In the electrical field, areas of expertise include turbines, power distribution systems, electrical components and imaging. In the computer field, areas of expertise include cloud computing, software defined networking, blockchains, network security, machine learning and artificial intelligence. Mr. Signor has particular expertise in subject matter eligibility case law and navigating Alice rejections.
Honors
- Selected as a 2015-2016 Global Fellow by the Federal Circuit Bar Association (FCBA) and the German Association for the Protection of Intellectual Property (GRUR)
- Rensselaer Medal recipient for achievement and excellence in Mathematics and Science
- Pi Tau Sigma (National Honor Society of Mechanical Engineers)
- Tau Beta Pi (National Honor Society of Engineers)
Professional Affiliations
- Intellectual Property Owners Association (IPO)
- Vice-Chair of the European Practice Committee
- American Intellectual Property Law Association (AIPLA)
- Licensing Executives Society (LES)
- Vereinigung von Fachleuten des Gewerblichen Rechtsschutzes (VPP)
- Rechtsanwaltskammer Frankfurt am Main
- New York State Bar Association (NYSBA)
- Federal Circuit Bar Association (FCBA)
- U.S. Bar-EPO Liaison Council
Articles, Publications & Lectures
- “Patenting Computer Simulations in Europe Following Enlarged Board Case G1/19,” moderator of IPO Chat Channel webinar (May 12, 2021)
- “U.S. Patent Formalities: The Guide to the Formal Requirements,” a 1.5 day online seminar for PAFA professionals by FORUM Institut für Management GmbH (November 11-12, 2020)
- “Alice Storm: Cost Effective & Winning Strategies in 2020,” Knowledge Group CLE webinar (July 30, 2020)
- “Artificial Intelligence: Patentability and Inventorship in Europe,” moderator of IPO Chat Channel webinar (July 1, 2020)
- “USPTO Revised Subject Matter Eligibility Guidelines: What You Should Know,” Knowledge Group CLE webinar (March 10, 2020)
- “U.S. Patent Formalities: The Guide to the Formal Requirements,” a 1.5 day seminar for PAFA professionals by FORUM Institut für Management GmbH in Amsterdam, Netherlands (October 16-17, 2019)
- “Time to Call 911 (Emergency) on 101 in the U.S.?,” IPO European Practice Committee Conference, Universität Basel, Switzerland (May 2, 2019)
- “Overview of New USPTO Guidelines under 35 U.S.C. §§ 101 and 112,” IPO European Practice Committee Call (February 21, 2019)
- “Challenges in Patenting Blockchain in the U.S.,” 6th Annual Indo-European ICT Conference at the European Patent Office (EPO), Munich, Germany (November 29, 2018)
- “U.S. Patent Formalities: The Guide to the Formal Requirements,” a full day seminar for PAFA professionals by FORUM Institut für Management GmbH in Amsterdam, Netherlands (September 28, 2018)
- “Recent U.S. Case Law Bolsters Patentability and Enforceability of Computer-Related Inventions,” IPO European Practice Committee Call (July 19, 2018)
- “Patenting Computer-Implemented Inventions (CII) at the EPO,” an interactive workshop with European Patent Office (EPO) representatives at the IPO-EPO Day Conference, Munich, Germany (November 14, 2017)
- “Strategies for Approaching New Restrictions on Patentable Subject Matter in the U.S.,” IPO European Practice Committee Conference, Paris, France (May 18, 2017)
- “Alice’s Progeny – Hope for Computer-Implemented Inventions,” IPO European Practice Committee Call (December 14, 2016)
- “Aktuelle Entwicklungen im US-Patentanmeldeverfahren [Latest Developments in U.S. Patent Application Procedures],” FORUM Institute, Heidelberger PAFA-FORUM, Heidelberg, Germany (November 24, 2016)
- “Optimizing Applications for the U.S.: Avoiding Pitfalls, Drafting and Prosecution Tips,” IPO European Practice Committee Conference, Frankfurt, Germany (May 12, 2016)
- “A U.S. Perspective on Article 84 EPC,” European Patent Office (EPO) Symposium, The Hague, Netherlands (January 14, 2016)
- “Strategien für die Erstellung von U.S. Patentanmeldungen [Patent Application Drafting Strategies for the U.S.],” VPP National Conference, Cologne, Germany (October 22, 2015)
- “Learning to Live with Alice – How Patentable Subject Matter Has Changed in the U.S.,” IPO European Practice Committee Call (June 18, 2015)
- “Design Patents in the U.S.,” IPO European Practice Committee Call (October 16, 2014)
- “The American Invents Act in Practice,” Technische Universität München, Munich, Germany (June 24, 2014)
- “Alice Corp. v. CLS Bank Int’l – The New Face of Section 101,” IPO European Practice Committee Call (August 21, 2014)
Languages
- German
Technologies
Insights
- James Signor to Present at Bardehle IP Academy on February 11
February 9, 2026 - Leydig Attorneys Appointed to Leadership Positions on IPO Committees
January 5, 2026 - Leydig Frankfurt Office Co-Hosted U.S. Patent Law Seminar on September 23
September 24, 2025 - Leydig Sponsors IPO European Practice Committee Conference
June 25, 2025 - Leydig Sponsors IPO European Practice Committee Conference
June 2, 2025 - Leydig Attorneys Attend Association of Intellectual Property Experts (VPP) Conference in Germany
May 12, 2025 - James Signor and Magki Strati to Present “U.S. Patent Formalities: Solving Challenges for Global Practitioners” on September 22
March 31, 2025 - Leydig Attorneys Appointed to Leadership Positions on IPO Committees
January 3, 2025 - James Signor Co-Authors IPO Law Journal’s White Paper "Intellectual Property, Sustainability and Climate Change"
December 9, 2024 - Leydig Attorneys Attend Association of Intellectual Property Experts (VPP) Conference in Berlin
October 25, 2024 - James Signor and Eric Arnell Attend IPO European Practice Committee Conference
June 24, 2024 - James Signor Participates in Substantive Patent Law Colloquium at the EPO
June 10, 2024 - James Signor to Speak at IPO’s European Practice Committee Conference on June 20
June 5, 2024 - James Signor Discusses USPTO Proposal to Change Terminal Disclaimers
May 24, 2024 - Leydig Sponsors IPO European Practice Committee Conference
May 21, 2024 - Leydig Attorneys Attend Association of Intellectual Property Experts (VPP) Conference in Germany
May 1, 2024 - Tom Canty and James Signor attend Licensing Executives Society (LES) Germany Annual Meeting
April 29, 2024 - James Signor Presents on US Patent Prosecution at German IP Academy
February 21, 2024 - Leydig Attorneys Attend Association of Intellectual Property Experts (VPP) Conference in Germany
November 1, 2023 - James Signor Speaks at IPO European Committee Conference in The Hague, Netherlands
October 25, 2023 - James Signor and Elias Soupos Attend U.S. Bar-EPO Liaison Council Meetings at EPO in Munich, Germany
October 17, 2023 - James Signor to Speak at IPO European Committee Conference at The Hague, Netherlands
October 4, 2023 - Leydig Attorneys Featured in IPO Impact Report
August 15, 2023 - James Signor Attends Leaders League Alliance Summit in Paris, France
July 11, 2023 - James Signor Discusses Proposed USPTO Fee Changes
May 23, 2023 - Leydig Attorneys Appointed to Leadership Positions on IPO Committees
January 10, 2023 - James Signor to Speak at IPO European Conference
May 20, 2022 - Claudia Stangle and James Signor Contribute to IPO Whitepaper on European Diversity in IP
March 31, 2022 - Intellectual Property Owners Association Spring Summit and Leadership Meeting
March 16, 2022 - James Signor to moderate IPO panel.
May 10, 2021 - James Signor to Speak at IPO European Practice Conference on May 2
April 26, 2019 - James Signor to Speak at the Indo-European ICT Conference on November 29
November 29, 2018 - James Signor to Speak on US Patent Formalities for Forum Institut in Amsterdam on September 28
September 28, 2018